Concrete-reinforcement.



LUTEN. CONCRETE REINFORCBMENT.

ABILIUATION FILED SEPT. 25, 1906.

Patented Nov. 11, 1913.

.1 m l E. 2 .u M n ICEX DANIEL' lil-LUTEN, 0F INDIANAPOLIS, INDIANA.

rovente.

`3j@eeie'etion of Letters Patent.

Patented Nov. 11, 191,3.

'Application filed September 25, 1906. Serial No. 336,157.

To all iv/1,0m z'lf may concern:

Be it known that I, DANIEL B. LU'rnN, a citizenlo theUnited States, residing at Indianapolis, in the county ot Marien and State of Indiana, have invented certain new and useful Improvements in Concrete-Reinforcement, of 'which the following is ay specilicsltion.

In the building of .reinforced concrete floors, arches andthe like the labor employed is comparatively unskilled and, as the proper placing of the reinforcement is very importent in order to secure desired results with a. minimum Weight of reinforcing material; ditliculty has heretoforebeen experienc-ed in placing the reinforcing material properly. e

The object. of my present invention is to produce a reinforcing unit properly designed for a particular structure in View, with the several parts .thereof so formed that when associated in a unit, the various stresses to which the completed structure will be sub jected` will beproperly taken care of with :i lniniinuin Weight of reinforcingr material, the construction being such that the several parts may be properly formed in a factory Where proper tools are ready at hand, and such that the unit may be shipped either in its completedV fornior `may be shipped ill knocked down forni and readily assembled by unskilled labor.

A lfurtl'ler object of my invention is to so form a reinforcing unit of the class described that the stresses will be applied thereto symmetrically so as to yavoid producinglnaterial turningl moments on the unit.

'llle accompanying drawings illustrate lny invention.

Figure l. is a vertical section oi." a. floor and sllipporting abutl'llents or partiliolu--, con Siruclzed in accordance with illy invention; Fig. Q a section, on a smaller scale at right ongles to Fig. l: Figs. 3 and il. similar scctions of l'multiplied constructions wherein tilingr is used in part 'for the floor; Fig. 5`a a perspective vienY oln` a Lele-ment unitiligr. G, a similar View of a i'l-elenlrnl. unit; and Fig. 'l' a perspective:detail oli a. suitable t'orln of clamping' lnenlbifr,

In Fig. 5 .show a l-olelncllt unit consisting* of a central rod i0 which extends the length oi' the unit. c. from beam 1l to beam iaid alongside oi elonlent l0 upon each side thereof? are the rode ill and l0. The rod l0 et the. point n. is bent u ouf'ardly and :it the point B brought again substanltially parallel "ith the middle portion of the end 0ll the element being suliiciently long to extend e considerable distance into the depth ot the fanside of the support. The elelllent is similarly bent. upward et. the point AA and then at the point B brought parallel with the ll'liddle portion ot' the eleulellt and at the point Ci' turned. dolrnward in the manner already described tol" the rod l0. That portion ot' elelllent l0" between A :nld B lice nearer to the tl'l'lnsverse middle oit' the unit than does the portion between. A and B of the element i0 and, ill order to lie n'l'ore nearly :it right angles to the shfnlrinol forces actingY Within the floors, the angle ol the portion between and l to the horizontal greater than is that ot the portion betu'ern A and ll to the llorivolltnl. The elements 10, lll' and l0 are secured together by a suitable chllnp at various points. The el-elllents i0 and lll are placed upon opposite sidenol' ecluellt. l0 in order that there may be no measurable turning' moment ot' force actingr ou ille reinforcingT unit.

lll the unit shown in Fig. (i the central element is bent upl'ardiy at tllepoint T01 and at. the point 202 brought into parullelisnl with the middle portion. 'Flanking the clelllent 200 are tlle elements 21 and 'ille element 9.1. is bent upward at the point Qll and al 212 if; brought into palallelislll and at Q13 is turned downward so as to tend f loulln'zll'd along' the fareside of the partition or llbutlnellt 1,3. ll. the support for tile bca u1 is a rctnillingT wall as nt il. the dou'lljturncd end of ille elenleut 2l may be lel't of suliicient length so that at the point 2li it may b e benl; inward and crossed over toward llle\i"nner face of the retainingi wall and at 215 continued dowllll'ard along the inner taco of the retaining `wall, the point of Hexal-e in the retaining wall being approxin'lntely the neutral shear zone so that the reinforcing rod will lie in the `region of tension adjacent the outer fare ot the retainingwall at its outer end andill the region of tension adjacent ille inner `face at a. point lower down. The element is bent upwardly at Q21. at is brought into parallelienl. and at 2523 is turned doven in the vertira] plane ot the down turned end oi clement Qi. Lying alongside and outside of the elements 2l and 00 are elements 23 which lie outside the vertical planes of the middle staggered portion of elements 20, 21 and 22 and at their ends are provided with hooks 23 adapted to receive the down turned end of the elements 21 and 22. Point 201 is nearer the transverse middle of the unit than are the points 211 and 2.21 and the angles between the horizontal and the. portions 201 202, 211-212, and 221222 are gradually increased for the reason already mentioned; l

Any suitable clamping means may be employed for connecting the severalelements of a. reinforcing unit together, a convenient. clamp being shown in Fig. 7 which clamp is similar to the clamp shown in my prior Patent No. 1,060,919, patented May 6, 1913. This clamp consists of a piece of sheet metal 30 bent into a. U and provided with notches 31 vat the base of the U to receive the elements 20, 21, 22 and 23. Notches 31 are of gradually decreasing depth from one end of the sheet to the other and a Wedge 33 is inserted in the base of the U between it and the inserted rods or unit members. The wedge may be conveniently formed by bending a tapered sheet into a U-shape. The slots 31 may be formed by punching and in one or more of the slots a portion may be left and this portion may be bent out of the slo-ts so as to form a downwardly extending tooth or prong 34 which may be driven into the centering to hold the unit in proper position above the centering, the construction being such that, when the centering is removed the tip of the prongwill be exposed so that the metal lathe can be secured readily.

I claim as my invention:

1. A reinforcing unit for beams supported on columns, comprising a plurality of longitudinal members for embedment in the beam, said longitudinal members being spaced transversely and connected by members determining said spacing, the ends of some of said longitudinal members being vertically displaced upward, with the ends of said upwardly displaced members returned to substantial parallelism with the undisplaced members and then bent downward and crossing the plane of the undisplaced members and extending below the plane of the bottom of the beam for embedment in the supporting columns.

thereto very 2. A reinforcing unit to be embedded in beams and supporting columns of concrete, said unit having a main portion for embedment in the beam, the ends of which main portion have a greater vertical height than its middle vand also have downward extensions which extend below the bottom plane of the main portion and of the beam for embedment in the supporting columns.

3. A reinforcement unit intended for beams su orted on columns com risino' a plurality of longitudinal members connected by other members arranged transversely of the unit, certain of said longitudinal members being vertically displaced upward at points varying in distance from the middle of the unit and thereafter brought into substantial parallelism with the undisplaced members, the ends of upwardly displaced members being down turned and crossing the plane of the undisplaced middles of the members and extending below the plane of the bottom of the beam for embedment in the supporting columns.

4. A reinforced plastic structure comprising vertical supporting members, connecting members resting on said supporting members, and reinforcing members extending through lo-w regions in the connecting members at intermediate portions in the length of the latter, deflected thence, kupward to extend through higher regions in the connecting members adjacent the supportingl members, and deflected thence downward be-1 low the plane of the connecting members into the supporting members, the said downwardly extending parts of a reinforcing member lying in -those portions of the supporting members farthest from the connecting member in which the main portion of said reinforcing member lies, whereby the reinforcing members extending into a supporting member from the connecting members on opposite sides thereof cross 'each other.

In witness whereof, I have hereunto set my hand and seal at Indianapolis, Indiana, this 20th day of September, A. D. one thousand nine hundred and six.

DANIEL B. LUTEN. [1.. s]

l lVitnesses: I

ARTHUR M. Hoon THOMAS WV. MCMEANS.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C. 

